From my experience with the Coupe the CIS system surely doesn't exploit the engine to its full capacity, mainly because the air flow sensor requires very docile camshaft profiles. On the other hand, EFI is so flexible that it's a waste to use it with stock camshatfs and stock ignition. CIS doesn't like aggressive camshafts and aggressive camshats don't like stock ignition as they waken up the engine way past 6000 rpm where stock ignition is starting to lack seriously. This is why I fitted the EDIS wasted spark ignition system on my Coupe. I am absolutely thrilled by the set-up I have on the Coupe and the little I drove it before taking the trans out again to sort out a few issues indicated a very promising end result: roughly it accelerates like my euro 6.3 did up to 4000-4500 rpm (where the 6.3 started running out of steam) and goes on even stronger after that up to 6500-7000 rpm. Of course that kind of power also requires some work on the chassis, brakes and suspension, which I all did on the Coupe. The only downside are the polybushings that give a great precision at middle and high speed and are needed given the set-up I have to be able to exploit ffully the power train I have. But they are a bit harsh when driving over degraded suraces at low speeds. Not really what one would expect while driving an MB.

I just wanted to keep it simpler and easier on the Pagoda and I know that if I fit EFI I will end-up doing the same as on the Coupe.